#!/usr/bin/env python3

import unittest
import tempfile
import os.path
import importlib
import os
import sys
import imp

class TestBadReload(unittest.TestCase):
    def test_module_to_package(self):
        with tempfile.TemporaryDirectory() as d:
            sys.path[0:0] = [d]
            try:
                mod_name = "to_be_reloaded"
                # Create and import a module
                filename = os.path.join(d, mod_name + ".py")
                with open(filename, "w"):
                    pass
                mod = importlib.import_module(mod_name)
                self.assertEqual(mod.__file__, filename)
                # Turn it into a package instead, make sure reloading finds it
                dirname = os.path.join(d, mod_name)
                initname = os.path.join(dirname, "__init__.py")
                os.mkdir(dirname)
                os.rename(filename, initname)
                imp.reload(mod)
                self.assertEqual(mod.__file__, initname)
            finally:
                del sys.path[0]

if __name__ == "__main__":
    unittest.main()